Envelope forming machine with envelope blank stack sensor

Details Envelope forming machine with envelope blank stack sensor Envelope forming machine with envelope blank stack sensor

1985-06-12

1986-04-29

Husar, Francis S.

Sheet feeding or delivering

Feeding

Separator and conveyor

271113, 271165, 271259, 493 10, 493 27, B31B 106, B31B 302, B65H 518

Patent

active

045852219

ABSTRACT:
A machine wherein flat blanks are fed from a stack thereof to be folded and glued into envelopes. The machine is provided with an optical sensing device which is operable to sense when the stack of blanks diminishes to a predetermined height whereupon the machine will be turned off automatically so as to prevent a plurality of blanks from being simultaneously fed into the machine from the diminished stack to jam the machine. The machine operator can then add blanks to the stack and restart the machine. The sensing device can be turned off by the operator in order to run all of the blanks in the stack through the machine at the end of a blank run or at the end of a working day.

REFERENCES:
patent: 892985 (1908-07-01), Flagg et al.
patent: 1593827 (1926-07-01), Howard
patent: 3580141 (1977-05-01), Richter
patent: 3970384 (1976-07-01), Yamamoto et al.
patent: 4176941 (1979-12-01), Breitenkam et al.
patent: 4267009 (1981-05-01), Eddy

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